<template>
<div class="list" ref="wrapper">
    <div>
    <div class="area">
        <div class="title border-topbottom">当前城市</div>
        <div class="button-list">
            <div class="button-wrapper">
                <div class="button">{{this.city}}</div>
                </div>
        </div>
    </div>
     <div class="area">
        <div class="title  border-topbottom">热门城市</div>
        <div class="button-list">
            <div class="button-wrapper"
                 v-for="item of hot"
                 :key="item.id"
                 @click="handleCityClick(item.name)"
                 >
                <div class="button">{{item.name}}</div>
                </div>

        </div>
    </div>
     <div
       class="area"
       v-for="(item,key) of cities"
       :key="key"
       :ref="key"
     >
        <div class="title  border-topbottom">{{key}}</div>
        <div class="item-list">
            <div
             class="item border-bottom"
             v-for="innerItem of item"
             :key="innerItem.id"
             @click="handleCityClick(innerItem.name)"
            >
             {{innerItem.name}}</div>
        </div>

    </div>
    </div>
</div>
</template>
<script>
import Bscroll from 'better-scroll'
import {mapState, mapMutations} from 'vuex'
export default{
  name: 'CityList',
  computed: {
    ...mapState(['city'])
  },
  props: {
    hot: Array,
    cities: Object,
    letter: String
  },
  methods: {
    handleCityClick (city) {
      this.changeCity(city) // this.$store.commit('changeCity', city)
      this.$router.push('/')
    },
    ...mapMutations(['changeCity'])
  },
  watch: {
    letter () {
      if (this.letter) {
        const element = this.$refs[this.letter][0]
        // console.log(element)
        this.scroll.scrollToElement(element)
      }
    }
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.wrapper)
  }
}
</script>

<style lang="stylus" scoped>
.list
    overflow: hidden
    position: absolute
    top: 1.58rem
    left: 0
    right: 0
    bottom:0
    .border-topbottom
     &:before
       border-color: #ccc
     &:after
       border-color: #ccc
    .border-bottom
     &:before
       border-color: #ccc
    .title
      line-height: .54rem
      background: #eee
      color:#666
      padding-left:.2rem
      font-size: .26rem
    .button-list
      overflow:hidden
      padding: .1rem .6rem .1rem .1rem
      .button-wrapper
       float: left
       width: 33.33%
       .button
        margin: .1rem
        padding: .15rem 0
        text-align: center
        border: .02rem solid #ccc
        border-radius: .06rem
    .item-list
     .item
      line-height: .76rem
      color: #666
      padding-left: .2rem
</style>
